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/*
Bronze : Silver : Gold

24232308 : 6344070 : 859498 (26 May 2019)

3.820 : 1 : 0.135

28.3 : 7.41 : 1

28 : 7 : 1
*/

SELECT Month, 
       'Trust building' = Sum_badges
FROM (
      SELECT  Month = DATEADD(MONTH, DATEDIFF(MONTH, 0, Date), 0), 
              Sum_badges = SUM(CASE WHEN Class = 1 THEN 28 ELSE 0 END) + SUM(CASE WHEN Class = 2 THEN 7 ELSE 0 END) + SUM(CASE WHEN Class = 3 THEN 1 ELSE 0 END)
      FROM Badges
      GROUP BY DATEADD(MONTH, DATEDIFF(MONTH, 0, Date), 0)
     ) AS NewBadges
ORDER BY Month

fork query

edited jun 12 19

created apr 1 19 Iulia.Ionescu